1 files changed, 22 insertions, 0 deletions
diff --git a/application/basilisk/components/extensions/ext-c-devtools-inspectedWindow.js b/application/basilisk/components/extensions/ext-c-devtools-inspectedWindow.js
new file mode 100644
index 000000000..f50b7d80e
--- /dev/null
+++ b/application/basilisk/components/extensions/ext-c-devtools-inspectedWindow.js
@@ -0,0 +1,22 @@
+/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set sts=2 sw=2 et tw=80: */
+"use strict";
+
+extensions.registerSchemaAPI("devtools.inspectedWindow", "devtools_child", context => {
+  // `devtoolsToolboxInfo` is received from the child process when the root devtools view
+  // has been created, and every sub-frame of that top level devtools frame will
+  // receive the same information when the context has been created from the
+  // `ExtensionChild.createExtensionContext` method.
+  let tabId = (context.devtoolsToolboxInfo &&
+               context.devtoolsToolboxInfo.inspectedWindowTabId);
+
+  return {
+    devtools: {
+      inspectedWindow: {
+        get tabId() {
+          return tabId;
+        },
+      },
+    },
+  };
+});